WordPress Gutenberg plugin <= 21.8.2 - Cross Site Scripting (XSS) vulnerability

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2025-64354",
    "assignerOrgId": "21595511-bba5-4825-b968-b78d1f9984a3",
    "assignerShortName": "Patchstack",
    "dateUpdated": "2025-10-31T17:51:41.674Z",
    "dateReserved": "2025-10-31T11:23:06.889Z",
    "datePublished": "2025-10-31T11:42:26.178Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "21595511-bba5-4825-b968-b78d1f9984a3",
        "shortName": "Patchstack",
        "dateUpdated": "2025-10-31T11:42:26.178Z"
      },
      "datePublic": "2025-10-31T12:41:10.957Z",
      "title": "WordPress Gutenberg plugin <= 21.8.2 - Cross Site Scripting (XSS) vulnerability",
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Matias Ventura Gutenberg gutenberg allows Stored XSS.This issue affects Gutenberg: from n/a through <= 21.8.2.",
          "supportingMedia": [
            {
              "type": "text/html",
              "base64": false,
              "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Matias Ventura Gutenberg gutenberg allows Stored XSS.<p>This issue affects Gutenberg: from n/a through <= 21.8.2.</p>"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "Matias Ventura",
          "product": "Gutenberg",
          "collectionURL": "https://wordpress.org/plugins",
          "packageName": "gutenberg",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "n/a",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "<= 21.8.2"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
              "cweId": "CWE-79",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://vdp.patchstack.com/database/Wordpress/Plugin/gutenberg/vulnerability/wordpress-gutenberg-plugin-21-8-2-cross-site-scripting-xss-vulnerability",
          "tags": [
            "vdb-entry"
          ]
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-592",
          "descriptions": [
            {
              "lang": "en",
              "value": "Stored XSS"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Peter Thaleikis | Patchstack Bug Bounty Program",
          "type": "finder"
        }
      ]
    },
    "adp": [
      {
        "providerMetadata": {
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP",
          "dateUpdated": "2025-10-31T17:51:41.674Z"
        },
        "title": "CISA ADP Vulnrichment",
        "metrics": [
          {
            "cvssV3_1": {
              "version": "3.1",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L",
              "attackVector": "NETWORK",
              "attackComplexity": "LOW",
              "privilegesRequired": "LOW",
              "userInteraction": "REQUIRED",
              "scope": "CHANGED",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "availabilityImpact": "LOW",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM"
            }
          },
          {}
        ]
      }
    ]
  }
}